Single Screw&Barrel for Rubber Extrusion Machine
| US$1.00-285.00 | 1 Piece (MOQ) |
Basic Info.
Model NO.
screw diameter 20mm-300mm
Condition
New
Customized
Customized
Automatic Grade
Semiautomatic
Structure
Horizontal
Leading Time
35-45days
Application
Extruder
Ratio L/D
15-55
Diameter
20-300mm
Nitrided Layer Thickness
0.55-0.70mm
Steel Material
38crmoaia
Surface Roughness
Ra0.4
Warranty and Service
1 Year
Delivery Ways
by Sea or by Air
Hardness of Nitrided Layer
Hv950-1000
Transport Package
Wood Case
Specification
ISO9001: 2008
Trademark
DONGBIN
Origin
China
HS Code
84779000
Production Capacity
5000
Product Description
Standard
Diameter:φ20-φ300mm
Ratio of length to diameter:L/D=15-55
Materials
38CrMoAIA/SACM645/SKD11/SKD61/42CrMo
Duplex stainless Steels
GH3#
Power Metallurgy Raw Material
Cold/Thermal Spray Hard Metal Process
Advanced Nitriding Process
Corrosion&Abrasion Resistance Bimetal Spraying Process
Technical Index
| Product | Screw&Barrel |
| Tempering hardness | HB240-280 |
| Hardness of nitrogen treatment | HV950-1000 |
| Depth of nitrogen layer | 0.55-0.70 |
| Nitrided brittleness | Less than grade 1 |
| Surface roughness | Ra 0.4 |
| Screw straightness | 0.015mm |
| Hardness after nitriding | ≥900HB |
| Chromium-plating depth | 0.05-0.10mm |
| Alloy hardness | HRC55-62 |
| Alloy Depth | 1.5-2.0mm |
Production Process as below:
01 Blanking-02 Quenching and Tempering-03 RoughTurning-04 Detecting-05 Semi Finishing Turning-06 Aging Treatment-07 Rough Grinding
08 Crossed Thread-09 Milling Cutter Roove-10 Turning Thread Groove-11 Tempering-12 Polishing Thread Groove-13 Fine Gringding-14 Milling Keyway-15 Fitter-16 Detecting-17 Nitriding or Bimetallic Treatment-18 Cut Off Process Allowance-19 Polishing Thread Groove-20 Detecting
Our Service
Warranty and service: 1years
Our Advantages
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
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